Subject population Patients will be recruited from the patient pool of the Teaching and Faculty Practice at the Harvard School of Dental Medicine. A 12-month period will be allowed to enroll the patients in this study. The mean treatment outcome will be compared between the two randomized patient groups, allowing for detection of the smallest clinically important differences between these means (TheSealedEnvelope™- http://www.thesealedenvelope.com/ power.php).